Charles t



(No Model.)

0. T. HAM. TUBULAR LANTERN.

No. 436,416. Patented Sept. 16, 1890.

UNITED STATES PATENT OFFICE.

CHARLES T. HAM, OF ROCHESTER, NEW YORK, ASSIGNOR TO THE C. T. HAMMANUFACTURING COMPANY, OF SAME PLACE.

TUBULAR LANTERN.

SPECIFICATION forming part of Letters Patent No. 436,416, datedSeptember 16, 1890.

Application filed March 4, 1890. Serial No. 342,658. (No model.)

To all whom it may concern.- to slide on the central air-tube II, beingpro Be it known thatI, CHARLES T. HAM, a citivided with a collar fittingthe tube and with zen of the United States, residing at Rochesa guide J,which extends upward from the ter, in the county of Monroe, in the Stateof bell or collar over the top of the central tube 5 New York, haveinvented certain Improveand thence down the other side. The guide mentsin Tubular Lanterns, of which the fol- J is arranged to slide betweensuitable lugs lowing is a specification, reference being had orprojections L on the central air-tube. The to the accompanying drawings.bell is provided with a lifting-catch or thumb- My present inventionrelates to certain impiece N. 0 [O provements in tubular lanterns,whereby the The lantern is of any ordinary or preferred sliding globe isheld in bot-h the elevated and construction, being provided'with anoil-1e3- depressed positions by a novel arrangement ervoir and burner of.any usual type. The of a spring or springs arranged to bear on thesupport F for the globe consists of a suitable globe. bent wire attachedat its ends to the bell and r 5 My improvements are fully described andpassing thence downward and then encirillustrated in the followingspecification and cling the globe below the bead O. The spring theaccompanying drawings, and the novel E is attached to the bell andsurroundsaprofeatures thereof specified in the claims anjecting ring onthe upper end of the bell, so nexed to the said specification. as tokeep the globe in engagement with the 20 My improvements in tubularlanterns are support E, while permitting its removal by represented inthe accompanying drawings, bending the spring E upward, as indicated byin whichthe dotted lines in Fig. 2.

Figure 1 is a side elevation showing the From an examination of Fig. 1it will be globe raised in dotted lines. Fig. 2 is a side perceived thatthe springs B bear on the outer 25 elevation taken at right angles withFig. 1, surface of the globe above its largest diamone of the side tubesbeing partially broken eter, and that when the globe is raised toataway, so as to show the spring by which the ford access to the wickthe springs will yield globe is locked. Fig. 3 is a transversesecoutward and slide over the summit of the contion through one of theside tubes on the vexity of the globe and bear upon the globe 8o 0 line3 3, Fig. 1'. below its greatest diameter, so that when the In theaccompanying drawings, A repreglobe is once raised it will remainsupported sents the sliding globe of a tubular lantern, in the elevatedposition by the pressure and B B the globe-holding springs, and C C thefriction of the springs. It is obvious that a side tubes. The springs BB are attached to single spring might be used to accomplish 5 the sidetubes and extend inward so as to this purpose; but I prefer to employthe two, bear 011 the outer convex surface of the globe as shown. Thesprings may extend either above the summit of the convexity when theupward or downward from their point of atglobe is down and below it Whenthe globe is tachment to the side tubes. They may be elevated, so thatthe globe is locked in either formed in any suitable way; but I preferto 0 position by the pressure of the springs against make them of wire,as shown, bent into suitthe inclined surface of the globe. The side ableshape so as to give a bearing on the tubes are preferably provided withaloop or globe. They are fastened to the tubes by stirrup D, by whichthe springs are supported soldering or in any other suitable way, andlaterally and their inward movement limited the loops D are secured tothe tubes so as to 45 when the globe is removed. The globe is atlimitthe inward movement of the springs tached to the bell which slides 011the central when the globe is removed and also to susair-tube in anypreferred manner-such, for tain the springs laterally.

instance, as the springE and the support F- Any suitable style ofguardsl? maybe used and the base-flange G may be attached to the on myimproved lantern. 50 globe or it may be supported by or attached I amaware that springs have been attached to the burner-cone. The bell I isarranged to the lantern-tubes with their free ends engaging slotsin theglobe-supporting plate, and I do not broadly claim devices of thischaracter. In said lantern the springs normally tend to raise or hold upthe globe at all times, and a separate spring-catch is used to hold theglobe down, some special holding device for this purpose being anecessity. Further, to depress the globe it is necessary to grasp it orits attachments below the horizontal airtube, which is objectionable, onaccount of the usually heated condition of the globe. In my improvedconstruction the globe is positively held in either of its positions,and it can be moved up or down by simply manipulating the guide J abovethe air-tube, which will always be cool. Furthermore, my springs areadapted for use in a lantern in which the air distributor is not carriedby the globe, as is necessary in the prior construction.

I claim 1. The combination, with the structure of .a tubular lanternprovided with a sliding globe, of a spring arranged to. bear on theconvex outer surface of the globe, whereby the globe is locked in bothits elevated and depressed positions, substantially as described.

2. The combination, with the structure of a tubular lantern, of a springattached to one of the side tubes and arranged to bear on the convexouter surface of the globe, whereby the globe is locked in both itselevated and depressed positions, substantially as described.

3. The combination, with the structure of a tubular lantern providedwith a sliding globe, of two springs attached to the side tubes andarranged to bear on the outer surface of the globe on opposite sidesthereof, whereby the globe is locked in both its elevated andvdepressedpositions, substantially as described.

CHARLES T. HAM.

Witnesses:

WM. J. MOPHERSON, GEO. B. SELDEN.

